Improvement in revolving habeows



@uitrit tatrs stent @frn 'HENRY ol sToLI., or arenaria, ILLINOIS.

Letters Patent No. 62,379, dater] 'l'n'u/vrj/ 26, 1867.

IMPROVEMENT IN REVOLVIN G ARROWS.

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TO ALL WHONFIT MAY CONCERN:

Bc it known that I,.IIENRY C. S'rom., of Mokcna, in the county ot Will, and State of Illinois, haveinvcnted a new and useful Improvement in Revolving Harrows; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation ol` the same, reference being had to thc annexed drawings, und letters of reference marked thereon, making a part of this specification, in which- Figure 1 is a perspective representation of my improvementl in harrows.

The nature of my invention consists, first, in the use ot un upper triangular fi'nme, one side ot which is used as a draught-har, and supports an inner friction-roller travelling on a track, elevated a suitable distance ubove the hai-row traino, and placed in such a position as to equalize the weight of the frame. while thc vother two sides of the triangle support the ernnuion weighted box, resting upon a friction-roller travelling upon an outer track. By this arrangement thc draught applied direetly to the central post, and thefimer frictionroller prevents the rear end of the draught-bar from inclining l.m.cl ward,and causing thc bearing made through the bur to bind upon the` central post, which would he the case it` the aforesaid provision was not made. This Y inner friction-roller is also important in preventing the triangular frame from being elevated too high at the front of the draw-bar whcnpassing over uneven ground, or u. sudden start ofthe horses, and is further nnpoin tant in preventing the drawhar from wearing down thc shoulder of the central pivot` as a large portion of the weight of ihe triangular' frame rests continuously upon the roller when the harrow is in use. 'lhus it is evident that the expense of replacing a roller, when worn out, wil-l be much less than supplying a new pivot; andto accoinplish this purpose, I place the friction-roller as near to thc pivot as the nature ot' a substantial construction will admit. Second, in constructing a harrow frame having a series ofnruis ot' equal length radiating from a common centre, by which means the inner and outer trae-ks have :i uniform support, which is not the case when the frame is constructed with rectangular cross-pieces; und further, the teeth can he arranged in such a manner in the frame that tho soil canbc more thoroughly pulvcrized, from the fact that harrow-teeth cannot be put through the joints ot the cross-timbers without weakening them.

A represents the `frame, which is halved togcther at thcV centre and secured in a substantial manner. C shows the inner track, secured to the frame A h v bolts in such a manner as to give additional support to the frame, and also provide a foundation for the parts K, used to elevate the draught-bar G and givea suitable surface for it to rest upon. G G Gsl1ows the triangular framercsting upon the friction-rollers D E and the upper part of K, a hole being made through G in order that thc post I may pass through and allow the frame G GV G to revolve upon it when the 'rollers D E are travelling upon the tracks C B. m shows the shank of the bent shaft, supporting the roller'D, passing upward into the draught-har G', which may be made to incline to the front or back, according to the length of the shank. B is the outer track, made oi round iron and bolted fast to the frame A. By means of this construction the frame A will readily revolve, and the triangular frame G G G will work easily thereon, even when pulvcrizing the soil of uneven ground. The harness attachments can be secured to the llool: U. in the usual manner, and the harrcw will operate without further care. .K

Having thus fully described my device, I do not claim the triangular frame Gr G G', the outer track B, and

the roller which runs upon it.; hut what I do claim, and desire to secure by Letters Patent, is-

The frame A, in combination with the tracks C B, friction-rollers E and D, and the triangular frame G G G. when constructed substantially as'und for the purposeset forth and described.

' HENRY C. STOLL. Witnesses:

Gro. L. OIIAPIN, A. HAYwAnD. 

